Answer:
A cooling curve of a substance is a graph of the variation of the temperature with time as it is allowed to cool. The gradient of the cooling curve is related to the heat capacity, the thermal conductivity of the substance, and the external temperature.
The cooling curve is one of the most accurate and widely used methods to measure the freezing point of foods. The wide application of this method is due to its accuracy and simplicity. In cooling curve method the sample time–temperature is recorded by a temperature-indicating device.
Explanation: